Home / 87,772.56-131,633.70-28,613.40

Finding the Fourth Proportional to 87,772.56, 131,633.70 and 28,613.40

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Solution

The fourth proportional to 87,772.56, 131,633.70 and 28,613.40 is: 42,911.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,772.56 : 131,633.70 = 28,613.40 : x
  2. Step 2: Convert to fraction form
    87,772.56/131,633.70 = 28,613.40/x
  3. Step 3: Cross multiply
    87,772.56x = 131,633.70 × 28,613.40
  4. Step 4: Simplify right side
    87,772.56x = 3,766,487,711.58
  5. Step 5: Solve for x
    x = 3,766,487,711.58/87,772.56
  6. Step 6: Final answer
    x = 42,911.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.